232121009 has 8 divisors (see below), whose sum is σ = 251491680. Its totient is φ = 213385536.

The previous prime is 232120957. The next prime is 232121011. The reversal of 232121009 is 900121232.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-232121009 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (232121089) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 158039 + ... + 159500.

It is an arithmetic number, because the mean of its divisors is an integer number (31436460).

Almost surely, 2^232121009 is an apocalyptic number.

It is an amenable number.

232121009 is a deficient number, since it is larger than the sum of its proper divisors (19370671).

232121009 is a wasteful number, since it uses less digits than its factorization.

232121009 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 317599.

The product of its (nonzero) digits is 216, while the sum is 20.

The square root of 232121009 is about 15235.5180089159. The cubic root of 232121009 is about 614.5701793230.

The spelling of 232121009 in words is "two hundred thirty-two million, one hundred twenty-one thousand, nine".